Why does adding a user to a group increase the size of this centos:latest Docker image to 22.7GB?

user_14295103 0
Viewed 320

I have pulled up the centos:latest Docker image which has an initial size of around 250 MB. After adding the lines below to create a group and add a user to the group the size of the docker image is ballooning to 22.7 GB.

I am not able to figure out why size is getting increased so much. Any ideas?

Here is the complete docker file:

FROM centos:latest

# Add x_user user
ARG user=x_user
ARG group=lxs_x_user
ARG uid=11111
ARG gid=22222

# Set environment variables
ENV HOME_DIR=/home/"$user"
ENV BASHRC_PATH=/home/"$user"/.bashrc
ENV SHELL=/bin/bash

# Create group 
RUN groupadd --gid "$gid" --system "$group"

# Create user and add to the group
RUN useradd  -G "$group" "$user" \
    --uid "$uid" \
    --gid "$gid" \
    --home-dir "$HOME_DIR"
docker
1 Answers
user_142951030
Related